Mitosis and Meiosis Review

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What is the process of mitosis?

Back

Mitosis is the process of cell division that results in two genetically identical daughter cells, each with the same number of chromosomes as the parent cell.

Front

What is the process of meiosis?

Back

Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four genetically diverse haploid cells, typically gametes (sperm and eggs).

Front

How many chromosomes are present in human body cells?

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Human body cells are diploid, containing 46 chromosomes (23 pairs).

Front

What is the difference between haploid and diploid cells?

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Haploid cells contain one set of chromosomes (n), while diploid cells contain two sets (2n).

Front

What is the role of meiosis in sexual reproduction?

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Meiosis produces gametes (sperm and eggs) that combine during fertilization to form a diploid zygote.

Front

What happens during anaphase I of meiosis?

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During anaphase I, homologous chromosomes are pulled apart to opposite poles of the cell.

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What happens during anaphase II of meiosis?

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During anaphase II, sister chromatids are separated and pulled to opposite poles of the cell.

Front

What is crossing over and when does it occur?

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Crossing over is the exchange of genetic material between homologous chromosomes that occurs during prophase I of meiosis.

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Why is genetic variation important?

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Genetic variation is important for evolution and adaptation, allowing populations to survive changing environments.

Front

What is the significance of the reduction in chromosome number during meiosis?

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The reduction in chromosome number ensures that offspring have the same number of chromosomes as their parents when gametes fuse during fertilization.